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JP2000124035A - Amorphous wound-core transformer and manufacture of wound core - Google Patents

Amorphous wound-core transformer and manufacture of wound core

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Publication number
JP2000124035A
JP2000124035A JP10291767A JP29176798A JP2000124035A JP 2000124035 A JP2000124035 A JP 2000124035A JP 10291767 A JP10291767 A JP 10291767A JP 29176798 A JP29176798 A JP 29176798A JP 2000124035 A JP2000124035 A JP 2000124035A
Authority
JP
Japan
Prior art keywords
core
amorphous
wound
iron core
transformer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10291767A
Other languages
Japanese (ja)
Other versions
JP3421253B2 (en
Inventor
Masayuki Horiuchi
雅之 堀内
Toshiki Shirahata
年樹 白畑
Katsutoshi Inagaki
勝敏 稲垣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP29176798A priority Critical patent/JP3421253B2/en
Publication of JP2000124035A publication Critical patent/JP2000124035A/en
Application granted granted Critical
Publication of JP3421253B2 publication Critical patent/JP3421253B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a transformer having a structure, preventing the increase of the size which is to be caused by using an amorphous wound-core, and a wound core for a transformer. SOLUTION: This amorphous wound-core transformer is provided with an amorphous wound-core 1, wherein an amorphous material thin beld is wound in multilayer and a plurality of coils 2 in which the amorphous wound-core 1 is inserted. In this case, the space factor of a core part 1a is made higher than that of a yoke part 1b in the amorphous wound core 1. It is preferable that the space factor of the core part 1a be made 88-96%.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、アモルファス磁性
材を用いた巻鉄心(本明細書中、「アモルファス巻鉄
心」という。)を有する変圧器及び巻鉄心の製造方法に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transformer having a wound core using an amorphous magnetic material (hereinafter referred to as "amorphous wound core") and a method of manufacturing the wound core.

【0002】[0002]

【従来の技術】変圧器は、高電圧・小電流の交流電力を
低電圧・大電流の交流電力に、また、その逆の変換を行
う機器であり、磁気回路を構成する鉄心と電気回路を構
成するコイルとを具備している。そして、鉄心の材料と
して、けい素鋼板以外にアモルファス磁性材料を使用す
ることが知られており、また、鉄心の構造として、積層
鉄心以外に鉄心材を巻回した巻鉄心が知られている。
2. Description of the Related Art A transformer is a device for converting high-voltage / small-current AC power into low-voltage / high-current AC power and vice versa. And a constituent coil. It is known that an amorphous magnetic material other than a silicon steel plate is used as a material of the iron core, and a wound iron core obtained by winding an iron core material in addition to a laminated iron core is known as a structure of the iron core.

【0003】従来のアモルファス巻鉄心変圧器に使用す
る巻鉄心に関する技術としては、図3(a)〜(c)に
示すものが上げられる。この技術は、切断し積層したア
モルファス薄帯1を、治具3、4a、4bにより成形、
拘束し焼鈍する。この焼鈍によりアモルファス巻鉄心1
を成形すると共に残留応力を取り除いている。その後、
拘束治具3、4a、4bを外し、コイル2に挿入、鉄心
開口部をラップして、鉄心コイル組立体とし、そして、
アモルファス巻鉄心変圧器とする。
[0003] As a technique relating to a wound iron core used in a conventional amorphous wound iron core transformer, there are techniques shown in FIGS. 3 (a) to 3 (c). In this technique, an amorphous ribbon 1 cut and laminated is formed by jigs 3, 4a, and 4b.
Restrain and anneal. By this annealing, the amorphous core 1
And the residual stress is removed. afterwards,
The restraining jigs 3, 4a, 4b are removed, inserted into the coil 2, the core opening is wrapped to form an iron core coil assembly, and
Amorphous iron core transformer.

【0004】アモルファス巻鉄心は、アモルファス薄帯
積層体であり、薄帯間に空隙を有しているため、治具に
より成形、拘束する際、締め付けて空隙を減らしてい
る。アモルファス薄帯の積み厚方向の厚さ寸法により、
締め付ける度合いを管理している。従来は、締め付ける
部分によって締付量を変化させることは、考慮しておら
ず、全体を同一の締付量で締め付けていた。締め付ける
度合いは、アモルファス巻鉄心を締め付けた状態の鉄心
断面積に占める、アモルファス薄帯(材料)の真の断面
積の割合で示し、「占積率」で表示することができる。
例えば占積率80%とは100の断面積を持ったアモル
ファス巻鉄心の材料が占る真の断面積は80と言うこと
になる。また、アモルファス薄帯の積み厚方向の厚さ寸
法による管理とは、次に示すような考えにより行ってい
る。
[0004] The amorphous wound core is an amorphous thin ribbon laminate and has a gap between the thin strips. Therefore, when forming and constraining with a jig, the gap is reduced by tightening. Depending on the thickness of the amorphous ribbon in the stacking direction,
The degree of tightening is managed. Conventionally, changing the amount of tightening depending on the part to be tightened has not been considered, and the entire body is tightened with the same amount of tightening. The degree of tightening is indicated by the ratio of the true cross-sectional area of the amorphous ribbon (material) to the cross-sectional area of the iron core in a state where the amorphous core is tightened, and can be expressed by “space factor”.
For example, a space factor of 80% means that the true cross-sectional area occupied by the material of the amorphous core having a cross-sectional area of 100 is 80. The management based on the thickness dimension of the amorphous ribbon in the stacking direction is performed based on the following concept.

【0005】幅Wのアモルファス巻鉄心の真の断面積を
Sとし、そして、占積率をA%とすると、締め付ける厚
さ寸法Tは、 T=(S/W)/(A/100) となり、この厚さ寸法Tとなるように締め付けている。
なお、アモルファス巻鉄心の真の断面積Sは、アモルフ
ァス薄帯の重量、比重及び長さ等により求めることがで
きる。
[0005] Assuming that the true cross-sectional area of an amorphous wound iron core having a width W is S and the space factor is A%, the thickness T to be tightened is T = (S / W) / (A / 100). , So as to have the thickness T.
Note that the true cross-sectional area S of the amorphous wound iron core can be obtained from the weight, specific gravity, length, and the like of the amorphous ribbon.

【0006】アモルファス巻鉄心変圧器は、けい素鋼板
を鉄心とした変圧器に比べ鉄心の占積率を約10〜15
%程低く設定する必要がある。これは、占積率を高く設
定すると、残留応力が残ることや、焼鈍の際アモルファ
ス薄帯間で焼き付き等が起って鉄損が著しく悪化するた
めである。
[0006] Amorphous wound iron core transformers have a space factor of about 10 to 15 as compared with a transformer using silicon steel cores.
% Must be set as low as possible. This is because, if the space factor is set high, residual stress remains, and during annealing, seizure or the like occurs between the amorphous ribbons, and iron loss remarkably deteriorates.

【0007】また、アモルファス巻鉄心は飽和磁束密度
が低いため磁束密度を低く設定しなければならず、これ
らを考慮すると、アモルファス巻鉄心は、けい素鋼板の
鉄心に比べ約50%断面積が大きくなる。
In addition, since the amorphous core has a low saturation magnetic flux density, the magnetic flux density must be set low. Considering these facts, the amorphous core has a cross-sectional area about 50% larger than that of a silicon steel core. Become.

【0008】このようなアモルファス巻鉄心を使用し、
そして、銅損をけい素鋼板変圧器と同等に設定する変圧
器は、電線も多く使用するため、全体として大型化せざ
るを得ないものとなっている。
Using such an amorphous wound iron core,
A transformer in which copper loss is set to be equal to that of a silicon steel plate transformer also uses a large number of electric wires, and therefore has to be enlarged as a whole.

【0009】[0009]

【発明が解決しようとする課題】本発明は、アモルファ
ス巻鉄心を使用することによる大型化を防いだ構造の変
圧器及び巻鉄心の製造方法を提供することを目的とす
る。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a transformer and a method of manufacturing a wound core having a structure that prevents an increase in size due to the use of an amorphous wound core.

【0010】[0010]

【課題を解決するための手段】本発明は、アモルファス
材薄帯を多層に巻回したアモルファス巻鉄心とアモルフ
ァス巻鉄心が挿入された複数のコイルを備えるアモルフ
ァス巻鉄心変圧器において、アモルファス巻鉄心は、コ
ア部の占積率がヨーク部より高いアモルファス巻鉄心変
圧器である。
SUMMARY OF THE INVENTION The present invention relates to an amorphous wound iron core transformer comprising an amorphous wound iron core in which an amorphous thin ribbon is wound in multiple layers and a plurality of coils into which the amorphous wound iron core is inserted. And an amorphous wound iron core transformer in which the space factor of the core is higher than that of the yoke.

【0011】また、本発明は、上記コア部の占積率は、
88〜96%であるアモルファス巻鉄心変圧器である。
Further, according to the present invention, the space factor of the core portion is:
It is an amorphous wound iron core transformer of 88-96%.

【0012】そして、本発明は、アモルファス材薄帯を
多層に巻回し成形焼鈍するアモルファス巻鉄心の製造方
法において、前記成形焼鈍する際、コイルに挿入される
コア部をアモルファス材薄帯積み厚方向に拘束するアモ
ルファス巻鉄心の製造方法である。
The present invention also relates to a method of manufacturing an amorphous wound iron core in which an amorphous material ribbon is wound in multiple layers and formed and annealed. This is a method for manufacturing an amorphous wound core.

【0013】[0013]

【発明の実施の形態】本発明の発明の実施の形態を説明
する。以下、本発明のアモルファス巻鉄心変圧器の一実
施例について、図1及び図2を用いて説明する。図1
は、実施例のアモルファス巻鉄心変圧器の巻鉄心の説明
図である。図2は、実施例のアモルファス巻鉄心変圧器
の巻鉄心の製造工程の説明図である。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described. Hereinafter, an embodiment of an amorphous wound iron core transformer according to the present invention will be described with reference to FIGS. FIG.
FIG. 2 is an explanatory view of a wound core of an amorphous wound core transformer of an embodiment. Drawing 2 is an explanatory view of a manufacturing process of a core of an amorphous core transformer of an example.

【0014】実施例1を説明する。本実施例のアモルフ
ァス巻鉄心変圧器に使用する巻鉄心1の構造の一例を図
1に示す。この巻鉄心1において、コア部1aの占積率
はヨーク部1bより高くなっている。コア部1aは、コ
イル内に挿入される部分であり、一方、ヨーク部1b
は、コア部1a以外であり、コイルの外に出ている部分
である。
Embodiment 1 will be described. FIG. 1 shows an example of the structure of a wound iron core 1 used in the amorphous wound iron core transformer of the present embodiment. In this wound iron core 1, the space factor of the core part 1a is higher than that of the yoke part 1b. The core part 1a is a part inserted into the coil, while the yoke part 1b
Is a portion other than the core portion 1a, which is outside the coil.

【0015】本実施例のアモルファス巻鉄心におけるコ
ア部1aの占積率をヨーク部1bより高くする方法の一
例を説明する。多層に積層したアモルファス材薄帯をU
字状に変形する(図2a参照)。次に、先端を突合せ、
成形型3及び治具4aを使用して成形し拘束し(図2b
参照)、焼鈍して残留応力を取り除く。その際、厚さ寸
法Taの管理によりコア部1aの占積率を88〜96%
とし、ヨーク部1bは拘束しない。これにより、コア部
1aの占積率はヨーク部より高くすることができる。得
られた巻鉄心1をコイル2に挿入する(図2c参照)。
そして、従来例と同様に組立てて、アモルファス巻鉄心
変圧器を製造する。得られたアモルファス巻鉄心変圧器
は、巻鉄心のコア部1aの占積率が高いので鉄損を低下
させることができ、そして、この低下分でヨーク部1b
の占積率の低さによる鉄損の増加分を打ち消すことがで
きる。
An example of a method for making the space factor of the core 1a higher than that of the yoke 1b in the amorphous wound iron core of the present embodiment will be described. Amorphous material ribbons laminated in multiple layers
It deforms into a letter shape (see FIG. 2a). Next, butt the tips,
It is molded and constrained using the mold 3 and the jig 4a (FIG. 2B).
), Annealing to remove residual stress. At this time, the space factor of the core portion 1a is controlled to 88% to 96% by controlling the thickness dimension Ta.
The yoke 1b is not restricted. Thereby, the space factor of the core part 1a can be made higher than that of the yoke part. The obtained wound core 1 is inserted into the coil 2 (see FIG. 2C).
Then, it is assembled in the same manner as in the conventional example to manufacture an amorphous wound iron core transformer. The obtained amorphous wound iron core transformer can reduce iron loss because the space factor of the core portion 1a of the wound iron core is high, and the reduced amount of the yoke portion 1b
The increase in iron loss due to the low space factor can be canceled.

【0016】このように、コア部1aの占積率を上げて
鉄損が悪化する部分を少なくすることで、鉄損の悪化を
押さえることができるため、巻鉄心1の大きさを抑制
し、コイル2の周長を短かくでき、電線の使用量を削減
することが可能となる。その結果、このアモルファス巻
鉄心を使用することにより、鉄心、コイルの大型化を押
えた変圧器構造を得ることができる。
As described above, by increasing the space factor of the core portion 1a to reduce the portion where the iron loss is deteriorated, the deterioration of the iron loss can be suppressed. The circumference of the coil 2 can be shortened, and the amount of electric wire used can be reduced. As a result, by using this amorphous wound iron core, it is possible to obtain a transformer structure that suppresses the increase in the size of the iron core and the coil.

【0017】以上、アモルファス巻鉄心1のコア部1a
を成形型3及び治具4aにより成形、拘束をし、そし
て、ヨーク部1bを拘束しない実施例を説明したが、図
3における従来例と同様に拘束し、その際、治具4aの
拘束による厚さTaの管理と治具4bの拘束による厚さ
Tbの管理とを異なるようにすることによって、コア部
1aの占積率がヨーク部1bより高くすることは可能で
ある。その際、コア部1aの占積率は、88〜96%で
あることが好ましい。
As described above, the core portion 1a of the amorphous core 1
Has been described using a molding die 3 and a jig 4a, and the yoke portion 1b is not restrained. However, the yoke portion 1b is restrained similarly to the conventional example in FIG. By making the management of the thickness Ta different from the management of the thickness Tb due to the constraint of the jig 4b, it is possible to make the space factor of the core portion 1a higher than that of the yoke portion 1b. At this time, the space factor of the core portion 1a is preferably 88 to 96%.

【0018】[0018]

【発明の効果】以上説明したように、本発明によれば、
アモルファス巻鉄心を使用することによる大型化を防い
だ構造の変圧器及び巻鉄心の製造方法を得ることができ
る。
As described above, according to the present invention,
It is possible to obtain a transformer and a method of manufacturing a wound iron core having a structure that prevents an increase in size due to the use of an amorphous wound iron core.

【図面の簡単な説明】[Brief description of the drawings]

【図1】実施例のアモルファス巻鉄心変圧器に使用する
巻鉄心の説明図。
FIG. 1 is an explanatory view of a wound iron core used for an amorphous wound iron core transformer of an embodiment.

【図2】実施例のアモルファス巻鉄心変圧器の巻鉄心の
製造工程の説明図。
FIG. 2 is an explanatory view of a manufacturing process of the wound core of the amorphous wound core transformer according to the embodiment.

【図3】従来技術のアモルファス巻鉄心変圧器の巻鉄心
の製造工程の説明図。
FIG. 3 is an explanatory view of a manufacturing process of a wound core of an amorphous wound core transformer according to the related art.

【符号の説明】[Explanation of symbols]

1 アモルファス巻鉄心 2 コイル 3 成形型 4a、4b 締付治具 DESCRIPTION OF SYMBOLS 1 Amorphous core 2 Coil 3 Mold 4a, 4b Tightening jig

───────────────────────────────────────────────────── フロントページの続き (72)発明者 稲垣 勝敏 新潟県北蒲原郡中条町大字富岡46番地1 株式会社日立製作所産業機器事業部内 Fターム(参考) 5E062 AA02 AB15 AB20  ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Katsutoshi Inagaki 46-1 Tomioka, Nakajo-cho, Kitakanbara-gun, Niigata F-term in the Industrial Machinery Division, Hitachi, Ltd. 5E062 AA02 AB15 AB20

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 アモルファス材薄帯を多層に巻回したア
モルファス巻鉄心とアモルファス巻鉄心が挿入された複
数のコイルを備えるアモルファス巻鉄心変圧器におい
て、 アモルファス巻鉄心は、コア部の占積率がヨーク部より
高いことを特徴とするアモルファス巻鉄心変圧器。
An amorphous wound iron core transformer comprising an amorphous wound iron core obtained by winding an amorphous thin ribbon in multiple layers and a plurality of coils into which the amorphous wound iron core is inserted, wherein the amorphous wound iron core has a space factor of a core portion. An amorphous wound iron core transformer that is higher than the yoke.
【請求項2】 請求項1記載のアモルファス巻鉄心変圧
器において、 上記コア部の占積率は、88〜96%であることを特徴
とするアモルファス巻鉄心変圧器。
2. The amorphous wound iron core transformer according to claim 1, wherein an occupying ratio of the core portion is 88 to 96%.
【請求項3】 アモルファス材薄帯を多層に巻回し成形
焼鈍するアモルファス巻鉄心の製造方法において、 前記成形焼鈍する際、コイルに挿入されるコア部をアモ
ルファス材薄帯積み厚方向に拘束することを特徴とする
アモルファス巻鉄心の製造方法。
3. A method for manufacturing an amorphous wound iron core in which an amorphous material ribbon is wound in multiple layers and formed and annealed, wherein a core portion inserted into a coil is constrained in a thickness direction of the amorphous material ribbon in the forming and annealing. A method for producing an amorphous wound iron core.
JP29176798A 1998-10-14 1998-10-14 Amorphous iron core transformer Expired - Lifetime JP3421253B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29176798A JP3421253B2 (en) 1998-10-14 1998-10-14 Amorphous iron core transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29176798A JP3421253B2 (en) 1998-10-14 1998-10-14 Amorphous iron core transformer

Publications (2)

Publication Number Publication Date
JP2000124035A true JP2000124035A (en) 2000-04-28
JP3421253B2 JP3421253B2 (en) 2003-06-30

Family

ID=17773164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29176798A Expired - Lifetime JP3421253B2 (en) 1998-10-14 1998-10-14 Amorphous iron core transformer

Country Status (1)

Country Link
JP (1) JP3421253B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006126074A (en) * 2004-10-29 2006-05-18 Ichiro Sasada Sensor coil and magnetic sensor using the same
EP4287223A1 (en) 2022-05-31 2023-12-06 Hitachi, Ltd. Core for stationary electromagnetic apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006126074A (en) * 2004-10-29 2006-05-18 Ichiro Sasada Sensor coil and magnetic sensor using the same
JP4638713B2 (en) * 2004-10-29 2011-02-23 一郎 笹田 Coil for sensor and magnetic sensor using the same
EP4287223A1 (en) 2022-05-31 2023-12-06 Hitachi, Ltd. Core for stationary electromagnetic apparatus

Also Published As

Publication number Publication date
JP3421253B2 (en) 2003-06-30

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